1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c16aaac5b800097a889f26dde594802d5d7f02392bb753cc8e562563869328. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/697ee881-e8cf-4429-9b7a-0ccc1d462d6c.json and https://artists.proofprofile.net/proofs/artist/697ee881-e8cf-4429-9b7a-0ccc1d462d6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa44cbe90386364e05f2d3492c4e4cd115af14862e42bd25f6ad774e4b97c8a8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3427ff093ac477f7c19fde54014f7499a940500a3e231443b8b290cb9c41a74. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0181653a548960d33cf5f55ae33c2e34dd48a30113cb1d861f9ba34355b9a63. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3919141a4fe99894df7465e4584ce26ab0b4e765f5bb27f86b6bfa90bcbe5941. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19349f799eb8b0d13a50e6e688d77d7167200756297c80d58286ceca719d563. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c4108b770dcb0598f5c7ce0ce20e1ab49eb0dfe7b22f7bcece491ffe17779. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdecdf640620288045cad0144da6ca466b8dee15d5ccf3c2ab751f165ac1f2a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0a66e707d05be8667b24249d4986bcde5cf0930c21cd57264674242b5f4480. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc5bdcd004902520449a16de0b9d98511e4bef4c4b35c9e7c08955268811add. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb5321bcff4d2e4226e54b3008741694a6c9b3dd16e75711d370e58281a732. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe576fe8e20ab6ab980c1bd48b7dced8aa4cce2dfda68d235159f3bf5d684a3c2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c08b4af324f4b561987c2f29d65f015d7994ae5832a2050a5be245132d4af0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c6e0aa0e803f2deb6d8efe36794afbc78b879c866d4319cc2a7bc46186c56. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65775fc77b33a7bde06248d10d81ec127acbddf6fd601df0920e33a6eddd80. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e407a2154bc9213309b4472e248123704b4f665cdbe563bbdbc343585f29d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450c1029ffc2a4b23314b6a3b591d9727f3811f245b5b098f48564f0c8dfd46. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe098ca88ef2a10f97bc8bde07bd8800e9d9d37ffaa602f057228eef0b187916. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095e9489aea8ab34e19aed6d7ec85ab4046d7e387a6f36cc426192a4ad401577. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5e39e77896cc51253ee5be5f0ef5ca5b1344a82f8812562ac6ceb1eef6ca90. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aa9a2b6f32009691cb725ffd1cd964bb3038729ebcf0e0213ff9933c6b0c44. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaf41415bf71c8b36a0f11947fc6b12032de4c97357067273b440995dedb749. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8103b638ee93e38d8a07f026b42b3691884a71dcda08e5734b4c7c01aa214765. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebfda8648e913f93c8b26431aabb97d7728c98319f26c5009e37bab592871f8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59edb849627d5989b3317536053c575c4085cfb507964fbfb8d2e70f88b1d367. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2f55e02888a9cae79b27955adb21258e5fe7529733890d89777a9abcbca65d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35c773e21aedc5207d497efadad3e9d4893ed95dcb10654f0248651c73fc09a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec2179e62ad321f41b56e4ad90ebd6a0b7d040f1c52c6ac14279eaee525483d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2432952.